Localized Severe Winds in Bismarck Friday night (June 15)

A line of showers with embedded thunderstorms moved through the Bismarck-Mandan area between 10pm-10:30pm CDT Friday night, June 15. As the line moved closer to Bismarck-Mandan, an outflow boundary raced out ahead of the main line of showers and thunderstorms.

The Bismarck radar (KBIS) detected a maximum wind speed of 67 mph at 353 feet above ground level (AGL) 12 minutes before a 61 mph gust was recorded at the Bismarck Airport (see image below). This was a very localized speed maxima that headed straight towards the airport. Other peak wind speeds in the area did not even register 50 mph winds (see table below).